Deadline For Tax Extension 2024 In The Us. The tax extension deadline is oct. From deadlines and deductions to brackets and your refund, here are answers to common questions about the 2024 tax season.

15, 2024, to file your 2023 income tax return if you requested an extension. For tax year 2023 (filed in 2024), you needed to submit your tax extension request by monday, april 15—the regular tax filing deadline—or face a penalty.